.eslintrc.js

module.exports = {
  root: true,
  parser: "@typescript-eslint/parser", // Specifies the ESLint parser
  parserOptions: {
    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
    sourceType: "module", // Allows for the use of imports
    ecmaFeatures: {
      jsx: true, // Allows for the parsing of JSX
    },
  },
  ignorePatterns: ["!.prettierrc.js", "!.lintstagedrc.js"], // We don't want to lint generated files nor node_modules, but we want to lint .prettierrc.js (ignored by default by eslint)
  settings: {
    react: {
      version: "detect", // Tells eslint-plugin-react to automatically detect the version of React to use
    },
  },
  env: {
    browser: true,
    amd: true,
    node: true,
  },
  extends: [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended", // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    "plugin:react/recommended", // Uses the recommended rules from @eslint-plugin-react
    "plugin:react-hooks/recommended",
    "plugin:jsx-a11y/recommended",
    "prettier",
    "plugin:prettier/recommended", // Enables eslint-plugin-prettier and eslint-config-prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
    "next",
  ],
  // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
  rules: {
    "prettier/prettier": ["error", {}, { usePrettierrc: true }],
    "react/react-in-jsx-scope": "off", // No need to import React when using Next.js
    "react/prop-types": "off", // We will use TypeScript's types for component props instead
    "@typescript-eslint/no-unused-vars": ["error", { ignoreRestSiblings: true }], // Why would you want unused vars?
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "jsx-a11y/no-onchange": "off",
    "@next/next/no-img-element": "off",
    // This rule is not compatible with Next.js's <Link /> components
    "jsx-a11y/anchor-is-valid": [
      "error",
      {
        components: ["Link"],
        specialLink: ["hrefLeft", "hrefRight"],
        aspects: ["invalidHref", "preferButton"],
      },
    ],
  },
};